$ git clone -n https://src.fedoraproject.org/rpms/kwin.git /var/lib/mock/f42-build-862529-170850/root/chroot_tmpdir/scmroot/kwin
Cloning into '/var/lib/mock/f42-build-862529-170850/root/chroot_tmpdir/scmroot/kwin'...
$ git fetch origin 193106c95d6f0615d71660cc073e68a921019702:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kwin
 * [new ref]         193106c95d6f0615d71660cc073e68a921019702 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 193106c 6.2.4